Paul Brinkmeier db29cbb20c
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Improve tests.h just a little
2022-10-26 20:56:33 +02:00

63 lines
1.5 KiB
C

// single-header unit test framework.
// if you want to keep your sanity, do not use this.
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
// globals.
struct tests_state {
int passed_tests;
int run_tests;
int total_tests;
char *current_label;
};
struct tests_state tests_state = { 0, 0, 0, NULL };
/* Basic idea:
TEST("...", {
ASSERT(...)
ASSERT(...)
...
})
TEST("...", {
ASSERT(...)
ASSERT(...)
...
})
DONE
*/
#define TEST(LABEL, BLOCK) \
tests_state.current_label = LABEL; \
tests_state.run_tests++; \
tests_state.total_tests = __COUNTER__; \
BLOCK; \
fprintf(stderr, "[%3d] \x1b[32m%s ✓\x1b[0m\n", tests_state.run_tests, tests_state.current_label); \
tests_state.passed_tests++;
#define ASSERT(EXPR) \
if (!(EXPR)) { \
fprintf(stderr, "[%3d] \x1b[31m%s ❌\x1b[0m\n", tests_state.run_tests, tests_state.current_label); \
fprintf(stderr, " Assertion failed in %s:%d:\n", __FILE__, __LINE__); \
fprintf(stderr, " " #EXPR "\n"); \
goto tests_bail; \
}
#define DONE \
tests_bail: { \
tests_state.total_tests = __COUNTER__; \
fprintf(stderr, "[\x1b[%dm***\x1b[0m] %d/%d tests passed", tests_state.passed_tests == tests_state.total_tests ? 32 : 31, tests_state.passed_tests, tests_state.total_tests); \
if (tests_state.total_tests > tests_state.run_tests) { \
fprintf(stderr, ", %d skipped", tests_state.total_tests - tests_state.run_tests); \
} \
fprintf(stderr, ".\n"); \
if (tests_state.passed_tests != tests_state.total_tests) exit(1); \
}